It was nice seeing you up in Maine.
It's more the differences between the cyl. If you have one cyl that's 100psi and one at 145psi and one at 80psi. That would be bad. In tech school they always say it's the % of the readings. 10% difference is normal.
I bet if you got a different tester and retested it the reading would be different.
You can always do a leak-down test
Kevin
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